DOC: special: Add Examples to `psi` docstring
DOC: special: Add Examples to `psi` docstring

e-q/scipy,ilayn/scipy,endolith/scipy,Stefan-Endres/scipy,zerothi/scipy,Eric89GXL/scipy,Stefan-Endres/scipy,WarrenWeckesser/scipy,anntzer/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,grlee77/scipy,matthew-brett/scipy,mdhaber/scipy,Stefan-Endres/scipy,mdhaber/scipy,tylerjereddy/scipy,anntzer/scipy,endolith/scipy,grlee77/scipy,rgommers/scipy,matthew-brett/scipy,e-q/scipy,scipy/scipy,zerothi/scipy,perimosocordiae/scipy,mdhaber/scipy,matthew-brett/scipy,Stefan-Endres/scipy,matthew-brett/scipy,vigna/scipy,anntzer/scipy,endolith/scipy,rgommers/scipy,andyfaff/scipy,vigna/scipy,andyfaff/scipy,grlee77/scipy,endolith/scipy,anntzer/scipy,Eric89GXL/scipy,matthew-brett/scipy,anntzer/scipy,WarrenWeckesser/scipy,rgommers/scipy,scipy/scipy,perimosocordiae/scipy,zerothi/scipy,WarrenWeckesser/scipy,tylerjereddy/scipy,ilayn/scipy,Eric89GXL/scipy,endolith/scipy,ilayn/scipy,perimosocordiae/scipy,Eric89GXL/scipy,mdhaber/scipy,anntzer/scipy,Eric89GXL/scipy,andyfaff/scipy,endolith/scipy,andyfaff/scipy,e-q/scipy,e-q/scipy,ilayn/scipy,andyfaff/scipy,Eric89GXL/scipy,scipy/scipy,vigna/scipy,grlee77/scipy,grlee77/scipy,rgommers/scipy,scipy/scipy,andyfaff/scipy,scipy/scipy,vigna/scipy,rgommers/scipy,scipy/scipy,tylerjereddy/scipy,tylerjereddy/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,mdhaber/scipy,e-q/scipy,tylerjereddy/scipy,ilayn/scipy,zerothi/scipy,Stefan-Endres/scipy,zerothi/scipy,zerothi/scipy,mdhaber/scipy,WarrenWeckesser/scipy,vigna/scipy,ilayn/scipy,Stefan-Endres/scipy